| Business | Phone |
| Bookingcenter 1992 Barlow Ln, Sebastopol 95472 | (707) 874-3922 |
| Bruce Aguirre & Collum 10393 Bodega Hwy, Sebastopol 95472 | (707) 829-5708 |
| Datahedron Software 1410 Santa Maria Way, Sebastopol 95472 | (707) 829-3792 |
| Harmonic Systems Inc Po Box 1001, Sebastopol 95473 | (707) 823-9301 |
| O'Reilly & Assoc 1005 Gravenstein Hwy N, Sebastopol 95472 | (707) 829-0515 |
| Prime Optical Disc 103 Morris St, Sebastopol 95472 | (707) 823-0808 |
| Systems Engineering Svc 6731 Orchard Station Rd, Sebastopol 95472 | (707) 792-2727 |